The Combined Defence Services (CDS) exam is one of the most sought-after entrance exams for candidates wishing to join the Indian Army, Navy, and Air Force as officers. Conducted by the Union Public Service Commission (UPSC), the CDS exam is a gateway for entry into the prestigious institutions such as the Indian Military Academy (IMA), Officers Training Academy (OTA), Indian Naval Academy (INA), and Air Force Academy (AFA).
As the year 2025 approaches, candidates aspiring to take the CDS exam need to be well aware of the application procedure, eligibility requirements, important dates, and necessary steps to ensure a smooth application process.
This article provides an in-depth guide on how to apply for the CDS exam in 2025.
What is the CDS Exam?
The CDS Exam is conducted twice a year by the Union Public Service Commission (UPSC) to select candidates for various military academies:
Indian Military Academy (IMA)
Indian Naval Academy (INA)
Air Force Academy (AFA)
Officers Training Academy (OTA)
The CDS exam is crucial for those who wish to serve in the armed forces as officers. The exam tests the candidates' knowledge in various subjects, including General Knowledge, English, and Elementary Mathematics, depending on the academy they are applying to.
Eligibility Criteria for CDS Exam 2025
Before applying for the CDS exam 2025, candidates must ensure they meet the eligibility criteria set by the UPSC. These criteria are based on age, educational qualification, and nationality. Let’s break them down in detail:
1. Nationality
Indian Citizen: Candidates must be Indian citizens.
Subject of Nepal or Bhutan: Candidates from Nepal or Bhutan are also eligible.
Tibetan Refugees: A Tibetan refugee who came to India before 1962 and intends to settle permanently in India is also eligible.
2. Age Limit
The age limit for different academies under the CDS exam varies, and candidates must ensure they fall within the required age bracket. The age limits for CDS 2025 (according to the January 2025 exam) are as follows:
Indian Military Academy (IMA): 19 to 24 years (candidates born between 2nd January 2001 and 1st January 2006 are eligible).
Indian Naval Academy (INA): 19 to 22 years (candidates born between 2nd January 2003 and 1st January 2006 are eligible).
Air Force Academy (AFA): 19 to 23 years (candidates born between 2nd January 2002 and 1st January 2006 are eligible).
Officers Training Academy (OTA): 19 to 25 years (candidates born between 2nd January 2000 and 1st January 2006 are eligible).
These age limits are considered as of January 1 of the year in which the exam is held.
3. Educational Qualification
Indian Military Academy (IMA): Candidates must have a graduation degree from a recognized university or its equivalent.
Indian Naval Academy (INA): Candidates must have a graduation degree in Engineering from a recognized university or its equivalent.
Air Force Academy (AFA): Candidates must have a graduation degree in any discipline with Physics and Mathematics at the 10+2 level or an Engineering degree.
Officers Training Academy (OTA): Candidates must have a graduation degree from a recognized university or its equivalent.
4. Marital Status
IMA and INA: Candidates must be unmarried.
AFA: Candidates must be unmarried.
OTA: Candidates must be unmarried.
5. Physical and Medical Standards
Candidates applying for the CDS exam must meet the physical and medical standards set by the Indian Armed Forces. The detailed medical requirements are available on the official website of UPSC and IAF, and candidates must meet them before final selection.
Important Dates for CDS Exam 2025
The UPSC typically releases the CDS Exam notification in October/November of the preceding year. Here are some of the key dates for CDS 2025:
Notification Release: October 2025
Application Start Date: October 2025
Last Date for Application: November 2025
CDS 2025 Exam Date (First Attempt): February 2025
CDS 2025 Exam Date (Second Attempt): November 2025
Candidates should regularly check the UPSC official website for updates on the exact dates.
How to Apply for CDS Exam 2025
The process of applying for the CDS Exam 2025 is entirely online, and candidates must follow a step-by-step approach to ensure successful submission. The application process is divided into two stages:
Step 1: Online Registration for CDS Exam 2025
Visit the Official UPSC Website
The first step to applying for the CDS exam 2025 is to visit the UPSC official website: www.upsc.gov.in.
Create an Account
If you do not have an existing account, click on the “Apply Online” link and create a new account. You will be required to provide basic details such as your name, date of birth, and contact information.
Log in to Your Account
After registering, log in with your credentials to proceed with the application.
Step 2: Filling Out the CDS Application Form
Personal Information
In this section, fill in your personal details, including your name, address, gender, age, nationality, and other basic information. Make sure that all details are correct and match your documents.
Select the Exam and Post Preferences
You will need to select which branch of the armed forces you wish to join (Indian Army, Navy, Air Force, or OTA). You can also select your preference for the Indian Military Academy (IMA), Indian Naval Academy (INA), Air Force Academy (AFA), or Officers Training Academy (OTA).
Educational Qualifications
Enter your educational qualifications. Ensure that your qualification meets the eligibility criteria for the post you are applying for.
Upload Documents
The application requires you to upload scanned copies of essential documents, including:
A recent passport-sized photograph
Scanned signature
Proof of identity (Aadhaar card, voter ID, etc.)
Educational certificates
Make sure that the scanned documents are clear and meet the prescribed size and resolution.
Payment of Fees
The application fee for the CDS exam is typically Rs. 200 for general category candidates, while SC/ST/PH candidates are exempt from the fee. The payment can be made through:
Credit/Debit card
Net banking
UPSC Pay-in-slip (to be deposited at a branch of the State Bank of India)
Step 3: Submission and Acknowledgement
Review the Application Before submitting your application, thoroughly review all the details. Once you are satisfied with the accuracy, click on the “Submit” button.
Print the Confirmation Page After submission, you will be redirected to a confirmation page. Print this page for your records, as it will serve as proof of successful submission.
Admit Card for CDS Exam 2025
Once the CDS exam application process is complete, UPSC will release the Admit Card for the exam about 2-3 weeks before the exam date. Candidates can download the admit card from the official UPSC website by logging in with their credentials.
The admit card will contain essential details like:
Your Roll Number
Exam Center Details
Exam Date and Timing
Make sure to carry a printout of the admit card along with a valid photo ID (like an Aadhaar card, passport, or voter ID) to the exam center.
CDS Exam Pattern 2025
Understanding the CDS exam pattern is crucial for efficient preparation. The exam is divided into two parts:
1. Written Examination
The exam consists of three papers:
English (100 marks): Comprising comprehension, grammar, and vocabulary.
General Knowledge (100 marks): Includes current events, history, geography, economics, and more.
Elementary Mathematics (100 marks): Covers arithmetic, algebra, geometry, and trigonometry.
Each paper has a duration of 2 hours, and the total marks for the exam are 300 (for candidates appearing for IMA, INA, or AFA). For candidates appearing for the OTA, there are only two papers: English and General Knowledge (200 marks).
2. Interview/SSB
Candidates who clear the written examination are called for an interview conducted by the Services Selection Board (SSB). The interview assesses candidates on various factors such as personality, leadership qualities, mental alertness, and physical fitness.
3. Medical Examination
After successfully clearing the SSB interview, candidates undergo a medical examination to ensure they meet the physical standards required by the Indian Armed Forces.
Conclusion
The CDS exam provides a significant opportunity for candidates to join the prestigious Indian Armed Forces as officers. Applying for


